山东五莲七宝山金矿床成矿物理化学条件及矿床成因  

PHYSICAL-CHEMICAL CONDITIONS FOR MINERALIZATION OF THE QIBAOSHAN GOLD-COPPER DEPOSIT AND ITS METALLOGENY IN WULIAN COUNTY, SHANDONGPROVINCE

作　　者：邱检生[1] 王德滋[1] 任启江[1] 张重泽[1] 

机构地区：[1]南京大学地球科学系,中国科学院地球化学研究所广州分部

出　　处：《矿产与地质》1994年第1期12-18,共7页Mineral Resources and Geology

基　　金：国家自然科学基金

摘　　要：七宝山金铜矿床流体包裹体的研究表明：成矿流体具有较高的Ｋ￣＋、Ｎａ￣＋、及Ｃｌ￣－含量，并富含ＣＯ＿２等挥发组分。成矿温度主要变化于２００～３５０℃，成矿体系具有中等偏高的及较高的。同位素的研究表明：成矿流体以岩浆水为主导，成矿热液及成矿物质主要来自岩浆。成矿体系由封闭型向开放型演变，导致物化条件的突变是促使金、铜矿质沉淀的关键所在。ased on the study of fluid inclusion and isotope Qibaoshan gold-copper deposit, it is shown that the ore-forming fluids have higher content of K￣+, Na￣+and Cl￣-, and rich in CO_2 and other volatile components.The homogenizatiOn temperature during ore-forming stage is mainly in the range of 200℃ to 350℃. The fs_2 andfo_2 values in the minerogenetic system is relatively higher, Isotope study shows that the oreforming fluids shouldbe comainly of magmatic water,and the ore-forming fluids and materials should be mainly maginaticsource. The deposition of copper and gold is mainly resulted in the drastic changes of physical-chemical conditionscaued by the opening of minerogenetic system.

关 键 词：金矿床 矿化 物理化学 矿床成因论 

分 类 号：P618.510.5[天文地球—矿床学]